Double-acting door-check.



J. H. SHAW.

DOUBLE ACTING DOOR CHECK.

APPLICATION FILED JULY 21, 1905.

1,074,091. Patented Sept. 23, 1913.

Z SHEETS-SHEET 1,

J. H. SHAW.

DOUBLE ACTING DOOR CHECK.

APPLIOATION FILED JULY 21, 1905.

1,074,091. Patented Spt.23,1913.

2 SHEETS-SHEET 2.

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JOHN H. SHAW, OF NEW HAVEN, CONNECTICUT, ASSIGNOB TO SARGENT 6c COMPANY,OF NEW HAVEN, CONNEGTICUT, A CORPORATION 013 CONNECTICUT.

DOUBLE-AGTING DOOR-CHECK.

b all whom it may concern Be it known that 1, JOHN H. SHAW, ot

the city and county of New Haven, State of Connecticut, have inventedcertain new and useful Improvements in Double- Acting Door-Checks, ofwhich the following is a full, clear, and exact description.

This invention relates to door checks for use on double acting doors.

Heretofore it has been proposed to make the ordinary form of door checkapplicable to double acting doors by inclining or slanting the axis ofthe link in the bracket (usually applied to the door frame) so that thelink will swing upward and downward the crank or lever arm connectedwith the spindle of the check applied to the door. The crank or arm ispivoted on the check spindle to move in a vertical plane, so that it.

may be pulled upward and downward by the obliquely pivoted linkconnected with the bracket, whereby said crank or arm is swung upwardover the top edge of the door when .the latter is opened in onedirection and is swung downward under the lintel of the door frame whenthe door is opened in the other direction.

'lhe object of the present invention is to provide a double acting doorcheck in which the crank or its equivalent carried by the spindle of thecheck is mounted to swing obliquely in a definite pat-h over the topedge of the door and under the lintel independently of the action of thelink or other member attached to the bracket. In other words, my objectis to furnish a check in which the raising and lowering of the crank orother element connected with the check spindle is not efl'ected by themovement of the link but by so mounting said crank that it will swing ina definite oblique path irrespective of its connection with the linkconnected to the bracket, thereby relieving the link of considerablestrain and increasing the positiveness of action and the generalefliciency and reliability of the device. The link is so connected withthe bracket that it can par take of the oblique raising and loweringmovements of the crank arm, and in some cases the link has special meansassociated therewith for raising and lowering it independently, althoughthis is not essential in all aspects of the invention.

To these and other ends the invention consists in the novel features andcombinations Specification of Letters Patent.

Application filed July 21, 1805.

latcntcd Sept. 233, l 913.

Serial No. 270,692.

of parts to be hereinafter described and claimed.

In the accompanying drawings, illustrating a preferred form of theinvention, Figure 1 is a front elevation of a double acting door checkembodying the invention, showing the doubli acting door in its closedposition, Figs. 2 and 3 are similar views showing the position of theparts when the door is opened in opposite directions, liig. t is alongitudinal vertical section through the bracket and the end of theconnecting link, Fig. 5 is a transverse vertical section through thesame parts showing them in a dill'erent position, Fig. (i is a detailfront elevation of the bracket detached, Fig. 7 is a verticallongitudinal section through the check, Figs. 8 and 9 are details of amodified form of bracket, and Fig... 10 and 11, are details of a:lurthcr modified form of bracket.

Referring to the drawings, A represents a double acting door, 13 thedoor jamb, G the lintel, and I) the door check proper. As shown in Fig.7 the device I) may combine the functions of a door check and a doorcloser, but it .may have only one of those functions, and when I referherein to a door check or a door check and closer it is to be understoodthat T use the term in a broad sense, intending to core a check, closeror combined check and closer. The check or closer or both must be of thedouble acting type as will be understood. The combined check and closerselected for illustration comprises a double acting closer spring and adouble acting spring check, the general construction and operation ofwhich will be obvious to those skilled in the art. In the emlwdimentillustrated the check I) and the bracket E are secured to the door andlimited respectively, and are connected to each other by means of acrank G and a link F, but in devices of this class it is sometimesexpedient to reverse this arrangement and to place the bracket on thedoor and apply the check to the door frame.

In the form shown, the arm G is swiveled at its outer end to the end ofthe link F, as indicated at IT. The swivel connection H permits themembers F and G to swing up and down, as will be understood. The crankarm or lever (i is pivoted to the upper end of the check spindle J bymeans of a pin it which permits the arm G to swing up and down on thecheck spindle. In this way, the arm G is capable of a slight oscillationin a vertical direction so that its outer end which is connected withthe link F may be raised and lowered to a certain extent.

In the embodiment illustrated, the arm G is swung upward and downward(in order to move in an oblique plane as the spindle J is rotated, andthereby pass over the top edge of the door or under the door lintel,according as the door is opened in one or the other direction) by. meansassociated with the casing of the check, such as a cam S on top of thecasing. The cam S is provided with a low part at one side of thecasingand with a high part at the opposite side of the casing, as shown.Then the arm G is rotated by the check spindle over and in contact withthe high portion of the cam (see Figs. 8 and '7) the arm will be swungup on its fulcrum pin it so that it will be raised above the top of thedoor when the latter is opened in one direction. On the other hand whenthe door is opened in the opposite direction the arm G swings by gravityon to the lower part of the cam S so that said arm will pass below thelintel G.

The link F (Figs. 1 to 7) is raised and lowered by special meansindependently of its connection with the arm G. In the constructionshown, the bracket E is hollow and is provided with a depending stud Khaving a lateral flange L at its lower end. The stud or pivot K ispreferably in substantial parallelism with the attaching face of thebracket E and with the spindle J of the door check, it being unnecessaryto slant or incline the bracket axis in the manner previously mentioned.On the outside of the bracket is a cam shaped flange M having itshighest point on the central line of the bracket E, as shown in Fig. 6,and inclined downward at both sides. The link F is pivoted to the stud Kby means of a trans verse perforation N at the end of said link throughwhich the stud J projects. At the upper end of the perforation N is aninwardly projecting flange 0 to engage the flange L on the stud K andthereby limit the longitudinal movement of the link on its pivot. Thelink is closely guided along the cam edge M by means of a finger P onthe link which projects over the top surface of the flange M as shown inFig. 5.

At the same time that the arm G is swung upward over the door A (Fig. 3)the link F is drawn to'a position approximately at right angles to theplane of the bracket E.

ate the link thereto connected.

shown in Figs. 10 and 11, the bracket E is downward (Fig. 2) the link Fwill be drawn to a position substantially parallel with the plane of thebracket E and said link will be lowered by passing into cooperation withthe lower portion of the cam M. Hence the entirerconnection between thespindle and bracket will be lowered or depressed suiiiciently to passbeneath the lintel of the door frame. 1

In Figs. 8 and 9 I have shown a modified form of bracket E having abearing portion or sleeve A with a bore B In the bore or perforation Ban inclined cam path C is arranged to cooperate with a stud or pin E onthe pivotal end portion ofthe link F The parts are assembled by passingthe pivotal portion of the link F into the bore or perforation B in sucha manner that the stud or pin E passes into the cam path C by way of agroove D as will be understood. The cam path C is higher at the middlethan at either end, and the operation is substantially the same as thatpre viously described and need not be referred to in detail. 7 V I Inthe modification shown in Figs. 10 and 11 the link is not provided withany special 'means for raising and lowering the same,

but on the other hand, is raised and lowered solely by means of itsconnection with the arm G. In other words, the arm G, in beingpositively moved by appropriate means in an oblique plane is depended onto actu- Tn the form provided with parallel ears A between which ismounted a block 13 provided with trunnions C having bearings in the cars[35, so that the block or member B is capable of oscillation in'apredetermined plane. The member B is provided with a stud D on which ispivoted a U-shaped piece E to which the end of the link F Y is pivotallyse cured. It will be understood that as the member B is free tooscillate in the bearings of the trunnion C and as the member E ismounted to oscillate on the pivot D at right angles to the axis of themember D a universal joint is provided, so that the link E is free tofollow the compound movements of the arm G. When the link F projects atright angles to the plane of the bracket the support B and piece E willextend downward as shown in Fig. 11, but when the link F is turnedtoward the plane of the bracket E it will tend to turn the piece E onits vided between the link and bracket. In all of the various forms ofmy device the crank arm or its equivalent attached to the check properis given an oblique raising and lowering movement by means other thanthe link, and the link is so connected with the bracketthat the end ofthe link connected with the crank arm is permitted to follow thecompound movements of the latter.

While the foregoing description is a detailed one in so far as itconcerns the particular embodiments of my invention selected forillustration and description, it will, of course, be understood thatnumerous modifications may be made in the construction without departingfrom the spirit of my invention as fairly defined in the claims.

What I claim is:

1. The combination with a double acting door and a door frame, of a doorcheck applied to one of said parts and having a spindle, a bracketapplied to the other part, a link connected with the bracket, and an armconnected with said link and with the check spindle, and mounted toswing in a predeterininedoblique path, independent of the action of saidlink; substantially as described.

2. The combination with a double acting door and a door frame, of a doorcheck applied to the door and having a spindle, a bracket applied to thedoor frame, a link connected with said bracket, and an arm connectedwith said spindle and said link and mounted for swinging movement,independent of the action of said link, in a predetermined path over theedge of the door and under the lintcl; substantially as described.

3. The combination with a double acting door and a door frame, of abracket applied to the door frame, a link connected with said bracket,an arm loosely connected to said link, and a door check applied to thedoor and affording a mounting for said arm on which the latter swings ina definite path over the top edge of the door and under the lintel,independently of the action of said link; substantially as described.

t. The combination with a double acting door and a door frame, of abracket applied to the door frame, a link, a coupling device connectingthe link with the bracket to perunit the link to have an oblique raisingand lowering movement, an arm loosely connected to said link, and a doorcheck applied to the door and affording a mounting for said arm on whichthe latter swings in a predetermined path over the top edge of the doorand under the lintel, independently of the action of said link;substantially as described.

5. The combination with a door check and closer, including a casing anda spindle ournaled therein, of means to connect said spindie with a dooror door frame, including an arm on said spindle mounted to swing in avertical plane, and means associated with said casing to raise and lowersaid arm as the spindle is rotated; substantially as described.

6. The combination with a door check and closer, including a casing anda spindle journaled therein, of means to connect said spindie with adoor or door frame, including an arm pivoted on said spindle to swingvertically, and a cam associated with said casing to raise and lowersaid arm as said spindle is rotated; substantially as described.

7. The combination with a door check and closer inchiding a casing and aspindle journaled therein, of means to etumect said spindle with a dooror door frame, including an arm pivoted to said spindle to swing up anddown, and means adjacent the connection of said arm with said spindle toswing said arm up and down as said spindle is rotated; substantially asdescribed.

8. The combination with a door check and closer including a casing and aspindle rotatable therein, of means to connect said spindle with a dooror door frame, including an arm pivoted to one end of said spindle toswing vertically with respect to said casing, and a cam on the casing toraise and lower said arm as the same is rotated with the spindle;substantially as described.

5). The combination with a door check and closer, including a spindle,of a bracket, means to connect said spindle with said bracket includinga member pivoted to said bracket on an. axis substantially parallel tosaid spindle, and a device associated with said bracket to raise andlower said connecting member as the check is actuated; substantially asdescribed.

it). The combination with a door check and closer including a casing anda spindle rotatable therein, of a bracket, connecting means extendingbetween said spindle and said bracket, and a cam associated with saidbracket to raise and lower said connecting means; substantially asdescribed.

11,. The combination with a door check and closer embodying a spindle,of a bracket, an arm connected to said spindle, a link connecting saidarm with said bracket, and a cam associated with said bracket to raiseand lower said link as the device is actuated; substmitially asdescribed.

12. The conibination with a door and door frame, of a door check andcloser, and a bracket, one of said parts being secured to the door andthe other to the door frame, said bracket having a vertically directedaxis, means movable about the axis of said bracket and connecting thelatter with the door check and closer, and means associated with saidbracket to raise and lower said connecting means as the same n'iovesabout the aforesaid axis; substantially as described.

18. The combination with a. door and door frame, of a door check andcloser, and a bracket, one of said parts being secured to the door andthe other to the door frame, said bracket having a vertically directedaxis, means movable about the axis of said bracket. and connecting thelatter with the door check and closer, and a cam associated with saidbracket to raise and lower said connecting means as the same moves aboutthe'atoresaid axis; substantially as described.

14. The combination with a door check and closer, including a spindle,0t abracket, I means connecting said spindle and bracket,j and de'icesat the spindle-connected end 16. The combination with a door check andcloser, including a spindle, of a bracket, means connecting said spindleand bracket, including a member pivoted to the bracket on an axissubstantially parallel to the attaching face of the bracket, and guidingmeans associated with the bracket to swing 18. The combination with adoor check and closer including a spindle, of a bracket, an arm pivotedto said spindle to swing up and down with respect to said check andcloser, a link connecting said arm with said bracket, means associatedwith the check and closer to raise and lower said arm, and meansassociated with said bracket to raise and lower said link; substantiallyas de I scribed.

19. The combination with a door check and closer, of meansto connectsaid check and closer with a door or door frame, including separatemembers loosely connectee to each other at theirmeeting ends, andseparate means to raise and lower the respective members as the deviceis actuated; substantially as described.

In witness whereof, I have hereunto set my hand on the 29th day of:June, 1905.

' JOHN H. SHAW.

Witnesses: I

TV. H. BRADLEY,

A. M. RYAN.

Copies of this patent inay be obtained for five cents each, byaddressing the Commissioner of ;Patents, Washington, D. C.

